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United States › Nebraska › Johnson County › Climate Station TECUMSEH 1S, NE US Distance 4.7 mi Normals 1991–2020

30-year climate normals

Johnson County Climate and Weather Averages

Hottest month — July

87.9°

average daily high. The coldest month is January, averaging a low of 12.7°F.

Johnson County gets 32.27" of precipitation a year and 22.4" of snow, and 42% of it falls in May, Jun, Jul.

Temperature through the year

Each bar spans the average daily low to the average daily high for that month.

20° 40° 60° 80° JanFebMarAprMayJunJulAugSepOctNovDec
MonthAvg highAvg low PrecipSnow
January 35.2° 12.7° 0.81" 6.7"
February 40.3° 16.8° 1.14" 6.4"
March 52.6° 27.9° 2.05" 2.0"
April 63.8° 38.3° 2.92" 1.1"
May 73.6° 50.3° 5.29" 0.0"
June 83.4° 60.8° 4.25" 0.0"
July 87.9° 65.0° 4.00" 0.0"
August 86.2° 62.5° 3.65" 0.0"
September 79.3° 52.5° 2.74" 0.0"
October 66.9° 39.3° 2.58" 0.4"
November 51.8° 27.4° 1.57" 1.9"
December 39.6° 17.4° 1.27" 3.9"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 42% falling in the wettest three months (May, Jun, Jul).

January 0.81"
February 1.14"
March 2.05"
April 2.92"
May 5.29"
June 4.25"
July 4.00"
August 3.65"
September 2.74"
October 2.58"
November 1.57"
December 1.27"
Annual total 32.27"

What this climate costs you

Degree days measure how hard a building has to work to stay comfortable. They are the reason two identical houses have very different power bills, and they are the link between the weather here and what you pay every month.

Cooling degree days How much air conditioning the climate demands 1,102
Heating degree days How much heating the climate demands 6,053
Approximate annual cooling cost At 13.59¢/kWh, Nebraska average $150
Approximate annual electric heating cost Lower where heating is gas rather than electric $288

These are rough planning figures from degree days and the state electricity price, not a bill estimate. House size, insulation and fuel type move them a lot. See the full cost of owning a home in Johnson County, where electricity is one line of eight.

Common questions

What is the weather like in Johnson County?

Johnson County averages a high of 87.9°F in July and a low of 12.7°F in January. Annual precipitation is 32.27 inches, including 22.4 inches of snow.

When is the rainy season in Johnson County?

The wettest stretch is May, Jun, Jul, which accounts for 42% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Johnson County?

The average daily high in July, the hottest month, is 87.9°F. That drives 1,102 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Johnson County?

Yes. Johnson County averages 22.4 inches of snow a year.

Sources

  • Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station TECUMSEH 1S, NE US (USC00258465), 4.7 miles from the county centroid.
  • Heating and cooling degree days — NOAA, same station and period.
  • Electricity price — US Energy Information Administration, Electric Power Monthly Table 5.6.A, Nebraska residential average.
  • Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.